openwrtv3/target/linux/ipq806x/patches-4.14/0056-cpufreq-dt-Add-missing-rcu-locks.patch
Koen Vandeputte 467b07e00c kernel: bump 4.14 to 4.14.43
Refreshed all patches

Compile-tested on: cns3xxx, imx6, x86_64
Runtime-tested on: cns3xxx, imx6, x86_64

Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
Tested-by: Michael Yartys <michael.yartys@protonmail.com>
2018-05-24 08:58:17 +02:00

23 lines
704 B
Diff

From 001a8dcb56ced58c518aaa10a4f0ba5e878705b6 Mon Sep 17 00:00:00 2001
From: Georgi Djakov <georgi.djakov@linaro.org>
Date: Tue, 17 May 2016 16:15:43 +0300
Subject: [PATCH 56/69] cpufreq-dt: Add missing rcu locks
Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>
---
drivers/cpufreq/cpufreq-dt.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/cpufreq/cpufreq-dt.c
+++ b/drivers/cpufreq/cpufreq-dt.c
@@ -143,8 +143,10 @@ static int opp_notifier(struct notifier_
ret = PTR_ERR(cpu_reg);
goto out;
}
+ rcu_read_lock();
volt = dev_pm_opp_get_voltage(opp);
freq = dev_pm_opp_get_freq(opp);
+ rcu_read_unlock();
mutex_lock(&priv->lock);
if (freq == priv->opp_freq) {